FCC Technician Exam Question Pool.   Subelement 3AH.
Signals and Emissions.     2 Questions.


--------------------------------------------------

3H 1.1   A
What is emission type N0N?

 A. Unmodulated Carrier.
 B. Telegraphy by On/Off keying.
 C. Telegraphy by keyed tone.
 D. Telegraphy by Frequency Shift Keying.


3H 1.2   C
What emission type is A3E?

 A. Frequency Modulated Telephony.
 B. Facsimile.
 C. Double Sideband, Amplitude Modulated Telephony.
 D. Amplitude Modulated Telegraphy.


3H 1.3   A
What emission type is J3E?

 A. Single Sideband Suppressed Carrier
    Amplitude Modulated Telephony.
 B. Single Sideband Suppressed Carrier
    Amplitude Modulated Telegraphy.
 C. Independent Sideband Suppressed Carrier
    Amplitude Modulated Telephony.
 D. Single Sideband Suppressed Carrier
    Frequency Modulated Telephony.


3H 1.4   B
What emission type is F1B?

 A. Amplitude Shift Keyed telegraphy.
 B. Frequency Shift Keyed telegraphy.
 C. Frequency Modulated telephony.
 D. Phase Modulated telephony.


3H 1.5   B
What emission type is F2B?

 A. Frequency Modulated Telephony.
 B. Frequency Modulated Telegraphy using audio tones.
 C. Frequency Modulated Facsimile using audio tones.
 D. Phase Modulated Television.


3H 1.6   D
What emission type is F3E?

 A. AM telephony.
 B. AM telegraphy.
 C. FM telegraphy.
 D. FM telephony.


3H 1.7   A
What is the emission symbol for Telegraphy by Frequency
Shift Keying without the use of a modulating tone?

 A. F1B.
 B. F2B.
 C. A1A.
 D. J3E.


3H 1.8   B
What is the emission symbol for Telegraphy by the
On/Off keying of a Frequency Modulating tone?

 A. F1B.
 B. F2A.
 C. A1A.
 D. J3E.


3H 1.9   B
What is the emission symbol for
Telephony by Amplitude Modulation?

 A. A1A.
 B. A3E.
 C. J2B.
 D. F3E.


3H 1.10   B
What is the emission symbol for
Telephony by Frequency Modulation?

 A. F2B.
 B. F3E.
 C. A3E. 
 D. F1B.

3H 2.2   A
What is the meaning of the term MODULATION?

 A. The process of varing some characteristic of a carrier
    wave for the purpose of conveying information.
 B. The process of recovering audio
    information from a received signal.
 C. The process of increasing the average power 
    of a Single Sideband transmitter.
 D. The process of supressing the carrier
    in a Single Sideband transmitter.


3H 6.1   B
What characteristic makes emission F3E especially well suited
for local VHF/UHF radiocommunications?

 A. Good audio fidelity and intelligibility
    under weak signal conditions.
 B. Good audio fidelity and high signal to noise
    ratio above a certain signal amplitude threshold.
 C. Better rejection of multipath distortion than the AM modes.
 D. Better carrier frequency stability than the Am modes.


3H 6.2   D
What emission is produced by a transmitter
using a reactance modulator?

 A. A1A
 B. N0N
 C. J3E
 D. G3E


3H 7.1   C
What other emission does phase modulation most resemble?

 A. Amplitude Modulation.
 B. Pulse Modulation.
 C. Frequency Modulation.
 D. Single Sideband Modulation.


3H 9.2   B
What emission does not have sidebands resulting from modulation?

 A. A3E
 B. N0N
 C. F3E
 D. F2B


3H 12.1   D
To what is the deviation of an
emission F3E transmission proportional?

 A. Only the frequence of the audio modulating signal.
 B. The frequency and the amplitude
    of the audio modulating signal.
 C. The duty cycle of the audio modulating signal.
 D. Only the amplitude of the audio modulating signal.


3H 14.1   B
What is the result of overdeviation
in an emission F3E transmitter?

 A. Increased transmitter power consumption.
 B. Out of channel emissions. (Splatter)
 C. Increased transmitter range.
 D. Inadequate carrier suppression.


3H 14.2   C
What is SPLATTER?

 A. Interference to adjacent signals
    caused by excessive transmitter keying speeds.
 B. Interference to adjacent signals
    caused by improper transmitter neutralization.
 C. Interference to adjacent signals
    caused by overmodulation of a transmitter.
 D. Interference to adjacent signals
    caused by parasitic oscillations at the antenna.


3H 16.1   B
What emissions are used in Teleprinting?

 A. F1A, F2B and F1B.
 B. A2B, F1B and F2B.
 C. A1B, A2B and F2B.
 D. A2B, F1A and F2B.


3H 16.2   D
What two states of teleprinter code are most
commonly used in Amateur Radiocommunications?

 A. Dot and Dash.
 B. Highband and Lowband.
 C. Start and Stop.
 D. Mark and Space.


3H 16.3   C
What emission type results when an AF Shift Keyer is connected
to the microphone jack of an emission F3E transmitter?

 A. A2B
 B. F1B
 C. F2B
 D. A1F


--------------------------------------------------

End of Subelement 3AH.